You should spend about 20 minutes on Questions 1-12 which are based on Reading Passage 1 below:
To make political decisions about the extent and type of forestry in a region it is important to understand the consequences of those decisions. One tool for assessing the impact of forestry on the ecosystem is population viability analysis (PVA). This is a tool for predicting the probability that a species will become extinct in a particular region over a specific period. It has been successfully used in the United States to provide input into resource exploitation decisions and assist wildlife managers and there is now an enormous potential for using population viability to assist wildlife management in Australia’s forests. A species becomes extinct when the last individual dies. This observation is a useful starting point for any discussion of extinction as it highlights the role of luck and chance in the extinction process. To make a prediction about extinction we need to understand the processes that can contribute to it and these fall into four broad categories which are discussed below.
A) Early attempts to predict population viability were based on demographic uncertainty whether an individual survives from one year to the next will largely be a matter of chance. Some pairs may produce several young in a single year while others may produce none in that same year. Small populations will fluctuate enormously because of the random nature of birth and death and these chance fluctuations can cause species extinctions even if, on average, the population size should increase. Taking only this uncertainty of ability to reproduce into account, extinction is unlikely if the number of individuals in a population is above about 50 and the population is growing.
D) Recent research has shown that other factors need to be considered. Australia’s environment fluctuates enormously from year to year. These fluctuations add yet another degree of uncertainty to the survival of many species. Catastrophes such as fire, flood, drought or epidemic may reduce population sizes to a small fraction of their average level. When allowance is made for these two additional elements of uncertainty the population size necessary to be confident of persistence for a few hundred years may increase to several thousand.
Besides these processes, we need to bear in mind the distribution of a population. A species that occurs in five isolated places each containing 20 individuals will not have the same probability of extinction as a species with a single population of 100 individuals in a single locality. Where logging occurs (that is, the cutting down of forests for timber) forest-dependent creatures in that area will be forced to leave. Ground-dwelling herbivores may return within a decade. However, arboreal marsupials (that is animals which live in trees) may not recover to pre-logging densities for over a century. As more forests are logged, animal population sizes will be reduced further. Regardless of the theory or model that we choose, a reduction in population size decreases the genetic diversity of a population and increases the probability of extinction because of any or all of the processes listed above. It is, therefore, a scientific fact that increasing the area that is loaded in any region will increase the probability that forest-dependent animals will become extinct.
Do the following statements agree with the views of the writer in Part A of Reading Passage 1?
In boxes 1-4 on your answer sheet write:
YES if the statement agrees with the writer
NO if the statement contradicts the writer
NOT GIVEN if it is impossible to say what the writer thinks about this
Example: A link exists between the consequences of decisions and the decision-making process itself. Answer: YES.
3. A species is said to be extinct when only one individual exists.
4. Extinction is a naturally occurring phenomenon.
5. Paragraph A
We gave a list of twenty pairs of words to sighted subjects and asked them to pick from each pair the term that best related to a circle and the term that best related to assure. For example, we asked: what goes with soft? A circle or a square? Which shape goes with hard?
Words associated Agreement among
with circle/square subjects(%)
Choose the correct letter, A, B, C or D.
Write your answers in boxes 13 –15 on your answer sheet.
13 In the ﬁrst paragraph, the writer makes the point that blind people
A. May be interested in studying art.
B. can draw outlines of different objects and surfaces.
C. can recognise conventions such as perspective.
D. can draw accurately.
14 The writer was surprised because the blind woman
A. Drew a circle on her own initiative.
B. did not understand what a wheel looked like.
C. included a symbol representing movement.
D. was the ﬁrst person to use lines of motion.
15 From the experiment described in Part 1, the writer found that the blind subjects
A. Had good understanding of symbols representing movement.
B. could control the movement of wheels very accurately.
C. worked together well as a group in solving problems.
D. got better results than the sighted undergraduates.
Questions 16 –18
Look at the following diagrams (Questions 16 –18), and the list of types of movement below. Match each diagram to the type of movement A–E generally assigned to it in the experiment. Choose the correct letter A–E and write them in boxes 16–18 on your answer sheet.
16 17 18
A steady spinning
B jerky movement
C rapid spinning
D wobbling movement
E use of brakes
Questions 19 –25
Complete the summary below using words from the box. Write your answers in boxes 19 –25 on your answer sheet. NB You may use any word more than once.
In the experiment described in Part 2, a set of word 19…….…… was used to investigate whether blind and sighted people perceived the symbolism in abstract 20…..……… in the same way. Subjects were asked which word ﬁtted best with a circle and which with a square. From the 21………… volunteers, everyone thought a circle ﬁtted ‘soft ’while a square ﬁtted ‘hard’. However, only 51% of the 22…….…… volunteers assigned a circle to 23…..…… . When the test was later repeated with 24………… volunteers, it was found that they made 25………… choices.
associations blind deep hard hundred identical pairs
shapes sighted similar shallow soft words
Which of the following statements best summarises the writer’s general conclusion?
A The blind represent some aspects of reality differently from sighted people.
B The blind comprehend visual metaphors in similar ways to sighted people.
C The blind may create unusual and effective symbols to represent reality.
D The blind may be successful artists if given the right training.
You should spend about 20 minutes on Questions 27-39 which are based on Reading Passage 3 below.
One of London Zoo’s recent advertisements caused me some irritation, so patently did it distort reality. Headlined “Without zoos, you might as well tell these animals to get stuffed”, it was bordered with illustrations of several endangered species and went on to extol the myth that without zoos like London Zoo these animals “will almost certainly disappear forever”. With the zoo world’s rather mediocre record on conservation, one might be forgiven for being slightly sceptical about such an advertisement.
Zoos were originally created as places of entertainment, and their suggested involvement with conservation didn’t seriously arise until about 30 years ago, when the Zoological Society of London held the first formal international meeting on the subject. Eight years later, a series of world conferences took place, entitled “The Breeding of Endangered Species”, and from this point onwards conservation became the zoo community’s buzzword. This commitment has now been clear defined in The World Zoo Conservation Strategy (WZCS, September 1993), which although an important and welcome document does seem to be based on an unrealistic optimism about the nature of the zoo industry.
The WZCS estimates that there are about 10,000 zoos in the world, of which around 1,000 represent a core of quality collections capable of participating in coordinated conservation programmes. This is probably the document’s first failing, as I believe that 10,000 is a serious underestimate of the total number of places masquerading as zoological establishments. Of course, it is difficult to get accurate data but, to put the issue into perspective, I have found that, in a year of working in Eastern Europe, I discover fresh zoos on almost a weekly basis.
The second flaw in the reasoning of the WZCS document is the naive faith it places in its 1,000 core zoos. One would assume that the calibre of these institutions would have been carefully examined, but it appears that the criterion for inclusion on this select list might merely be that the zoo is a member of a zoo federation or association. This might be a good starting point, working on the premise that members must meet certain standards, but again the facts don’t support the theory. The greatly respected American Association of Zoological Parks and Aquariums (AAZPA) has had extremely dubious members, and in the UK the Federation of Zoological Gardens of Great Britain and Ireland has
Occasionally had members that have been roundly censured in the national press. These include Robin Hill Adventure Park on the Isle of Wight, which many considered the most notorious collection of animals in the country. This establishment, which for years was protected by the Isle’s local council (which viewed it as a tourist amenity), was finally closed down following a damning report by a veterinary inspector appointed under the terms of the Zoo Licensing Act 1981. As it was always a collection of dubious repute, one is obliged to reflect upon the standards that the Zoo Federation sets when granting membership. The situation is even worse in developing countries where little money is available for redevelopment and it is hard to see a way of incorporating collections into the overall scheme of the WZCS.
Even assuming that the WZCS’s 1,000 core zoos are all of a high standard complete with scientific staff and research facilities, trained and dedicated keepers, accommodation that permits normal or natural behaviour, and a policy of co-operating fully with one another what might be the potential for conservation? Colin Tudge, author of Last Animals at the Zoo (Oxford University Press, 1992), argues that “if the world”s zoos worked together in co-operative breeding programmes, then even without further expansion they could save around 2,000 species of endangered land vertebrates’. This seems an extremely optimistic proposition from a man who must be aware of the failings and weaknesses of the zoo industry the man who, when a member of the council of London Zoo, had to persuade the zoo to devote more of its activities to conservation. Moreover, where are the facts to support such optimism?
Today approximately 16 species might be said to have been “saved” by captive breeding programmes, although a number of these can hardly be looked upon as resounding successes. Beyond that, about a further 20 species are being seriously considered for zoo conservation programmes. Given that the international conference at London Zoo was held 30 years ago, this is pretty slow progress, and a long way off Tudge’s target of 2,000.
Do the following statements agree with the views of the writer in Reading Passage 3? In boxes 27-33 write :
Y if the statement agrees with the writer
N if the statement contradicts the writer
NG if it is impossible to say what the writer thinks about this
27 London Zoo’s advertisements are dishonest.
28 Zoos made an insignificant contribution to conservation up until 30 years ago.
29 The WZCS document is not known in Eastern Europe.
30 Zoos in the WZCS select list were carefully inspected.
31 No-one knew how the animals were being treated at Robin Hill Adventure Park.
32 Colin Tudge was dissatisfied with the treatment of animals at London Zoo.
33 The number of successful zoo conservation programmes is unsatisfactory.
Choose the appropriate letters A-D and write them in boxes 34-36 on your answer sheet.
34 What were the objectives of the WZCS document?
A. to improve the calibre of zoos worldwide
B. to identify zoos suitable for conservation practice
C. to provide funds for zoos in underdeveloped countries
D. to list the endangered species of the world
35 Why does the writer refer to Robin Hill Adventure Park?
A. to support the Isle of Wight local council
B. to criticise the 1981 Zoo Licensing Act
C. to illustrate a weakness in the WZCS document
D. to exemplify the standards in AAZPA zoos
36 What word best describes the writer’s response to Colin Tudges’ prediction on captive breeding programmes?
The writer mentions a number of factors which lead him to doubt the value of the WZCS document Which THREE of the following factors are mentioned? Write your answers (A-F) in boxes 37-39 on your answer sheet.
List of Factors:
A. the number of unregistered zoos in the world
B. the lack of money in developing countries
C. the actions of the Isle of Wight local council
D. the failure of the WZCS to examine the standards of the “core zoos”
E. the unrealistic aim of the WZCS in view of the number of species “saved” to date
F. the policies of WZCS zoo managers